Apparatus for making particleboard by a continuous extruding technique of particulated materials

Abstract

The apparatus includes a multi-compartment hopper into each compartment of which various particulated materials are fed at a grain size according to the quality of the particular layer desired in the end product, which can be in the form of a board or a animal feed cakes in strip form, and wherein the materials are continuously but controllably fed into a pressing chamber onto which a forward pressing piston operates in one preferred direction, namely the direction of the feed, and a pair of side pressing pistons act from both sides, the interaction of all pressing means forcing the pressed product into a canal at the output of the pressing chamber where it may undergo further treatment such as by heating.

Having thus described the invention, what I claim as new and desire to be secured by Letters Patent, is as follows: 
     
       1. Apparatus for the continuous manufacturing of a pressed multilayer product from particulated materials, comprising: a multicompartmented hopper means for receiving said particulated materials, each compartment is adapted to be charged with a different material and having an input and an output end portions;   a pressing chamber located at the output end portions of said compartments;   a forward pressing piston means mounted for sliding into and out of said pressing chamber for compacting said particulated materials during such forward motion;   a pair of side pressing piston means having pressing surfaces and mounted for moving into and out of said pressing chamber from opposing directions, said opposing directions being perpendicular to the direction of motion of said forward pressing piston means wherein said side pressing piston means compact said particulated materials from said opposing directions;   an output canal means for receiving said compacted material and feeding same away from the region of said pressing chamber upon the action of said forward pressing piston means and of said pair of side pressing piston means, wherein said hopper means comprises at least a pair of compartments located on each side of said forward pressing piston means, and wherein heating means are provided along said output canal means.   
     
     
       2. The apparatus as claimed in claim 1, wherein feed control slider means are provided at said output end of said compartments for controlling the quantity fed from each compartment to said pressing chamber, thereby controlling the thickness of associated layers in said multilayer product. 
     
     
       3. The apparatus as claimed in claim 1, wherein said pressing surface of said side pressing piston means comprises a predetermined pattern. 
     
     
       4. The apparatus as claimed in claim 1, wherein said pressing surface of said side pressing piston means are provided with scoring or cutting edge means. 
     
     
       5. The apparatus as claimed in claim 1, comprising means for driving said forward pressing piston means and said side pressing piston means.